CN102507593B - Method of automatically detecting part position of self-destruction syringe by using machine vision system - Google Patents
Method of automatically detecting part position of self-destruction syringe by using machine vision system Download PDFInfo
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- CN102507593B CN102507593B CN 201110359081 CN201110359081A CN102507593B CN 102507593 B CN102507593 B CN 102507593B CN 201110359081 CN201110359081 CN 201110359081 CN 201110359081 A CN201110359081 A CN 201110359081A CN 102507593 B CN102507593 B CN 102507593B
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Abstract
The invention provides a method of automatically detecting a part position of a self-destruction syringe by using a machine vision system. The method comprises the steps of: setting an installation position of a metal sheet with thorns in a push rod of a self-destruction syringe as a detection parameter; setting detection precisions and set values of different detection parameters according to user requirements; starting up a camera by an outer triggering and controlling signal to take images of the push rod of the self-destruction syringe which is in on-line operation in real time; transmitting the taken images to a computer for detection; processing by the computer through an image algorithm and extracting images of the push rod of the self-destruction syringe; calculating the installation position of the metal sheet with thorns in the push rod of the self-destruction syringe; judging whether the product is a qualified product or a waste product through a calculated distance value; and removing the waste product from an appointed discharge port through the outer triggering and controlling signal. The method of automatically detecting the part position of the self-destruction syringe by using the machine vision system, disclosed by the invention, has high precision and high speed for detecting the part position of the self-destruction syringe and can be used for efficiently guaranteeing the qualified rate of products.
Description
Technical field
The present invention relates to the technical field of utilizing Vision Builder for Automated Inspection to detect online, relate in particular at the self-destruction syringe erecting yard, utilize Vision Builder for Automated Inspection whether the barbed sheet metal in the self-destruction syringe is installed in the method that the tram is detected automatically.
Background technology
Self-destruction syringe comprises syringe needle, overcoat, piston and push rod, push rod four limits from the middle part to piston be continuous serrate step, barbed sheet metal with flexible Y shape is arranged between push rod and the overcoat, there is certain flexibility at barbed sheet metal two ends, can be stuck on the push rod, be contained in the upper end between push rod and the overcoat.When injection was complete, barbed sheet metal can be taken by serrate step continuous on the push rod to the bottom of overcoat, and push rod can not be pulled out again, when with the past post-tensioning of push rod, barbed sheet metal will sting outward and put, and destroys the integrality of overcoat, makes syringe lose the value of recycling.
Self-destruction syringe making-up shop in line production is on-the-spot, need to whether be installed in the push rod tram to the barbed sheet metal of self-destruction syringe and detect online.Barbed sheet metal is installed on which serrate step on the push rod, has determined the amount of the maximum injectable liquids of self-destruction syringe.In the prior art, the online detection of the barbed sheet metal position of self-destruction syringe relied on manually detect, produce the machine side at self-destruction syringe and establish detection and the processing that about 80 people carry out part position of self-destruction syringe, according to testing result product is divided into certified products (such as barbed sheet metal correct position) and unacceptable product (such as barbed sheet metal malposition).Unacceptable product is directly as goods rejection.
The shortcoming that manual detection exists mainly contains: the on-the-spot ventilation of workshop is poor, and workman's testing environment is abominable, can't directly use range estimation (needing use the Special handheld magnifier), and labour intensity is large; The normal eye namely can dim eyesight, the discomfort such as eye is swollen about uninterrupted observation moving object 30min, and for a long time non-stop run of testing staff can't guarantee the product export qualification rate; The part position of self-destruction syringe detection is the detection with precision, and human eye can't judge accurately that error is large, and the chance of makeing mistakes is a lot, can't guarantee to detect quality; The speed that the professional detects self-destruction syringe is up to 0.5/s, and throughput rate is had very big restriction.
The content of invention
Online detection dependence to part position of self-destruction syringe manually detects for prior art, the workman produces visual fatigue easily, labour intensity is large, can't guarantee product percent of pass and detect quality, the problems such as monitoring velocity is low the invention provides a kind of Vision Builder for Automated Inspection to the automatic testing method of part position of self-destruction syringe, and it reduces workman's detection labour intensity greatly, accuracy of detection is high, speed is fast, the qualification rate of the product that can effectively guarantee to dispatch from the factory.
Technical scheme of the present invention is as follows:
A kind of Vision Builder for Automated Inspection may further comprise the steps the automatic testing method of part position of self-destruction syringe:
The self-disposable type inspirator push-rod that (1) barbed sheet metal will be installed is fixed on the frock bar anchor clamps, makes frock bar anchor clamps on-line operation, will take camera and be fixed on frock bar anchor clamps one side of on-line operation; According to the size of self-disposable type inspirator push-rod to be detected and barbed sheet metal towards, select the focal length of camera lens, adjust shooting angle, enlargement factor, shooting distance, aperture size, the time shutter of taking camera, in order to obtain clearly photographic images;
(2) installation site of barbed sheet metal in self-disposable type inspirator push-rod is made as the detection parameter, and accuracy of detection and the setting value of described detection parameter are set according to customer requirements;
(3) computing machine is obtained camera and production process synchronous triggering and control signal, starts the image that described camera is taken the on-line operation self-disposable type inspirator push-rod in real time by external trigger and control signal, and with the image transmitting taken to computing machine for detecting;
(4) computing machine is processed by image algorithm, extracts the image of self-disposable type inspirator push-rod;
(5) computing machine calculates the installation site of described barbed sheet metal in self-disposable type inspirator push-rod; Calculate this barbed sheet metal apart from the distance of self-disposable type inspirator push-rod lower end, this distance value namely is the installation site of described barbed sheet metal;
(6) judge that by the distance value that calculates this product belongs to certified products or waste product, by external trigger and control signal waste product is rejected from the discharging opening of appointment.
Its further technical scheme is: to described (6) step, specifically carry out in the steps below the smooth judgement of otch and go-on-go:
(7) judge whether described barbed sheet metal equates with setting value apart from the distance of self-disposable type inspirator push-rod lower end, as equated then to turn to (8) step with setting value, if then turn to (9) to go on foot with setting value is unequal;
(8) sort as certified products;
(9) directly as goods rejection.
And its further technical scheme is: to described (6) step, when detecting product and be waste product, computing machine will carry out picture cues by man-machine interface, and start warning device.
Useful technique effect of the present invention is:
The present invention adopts Vision Builder for Automated Inspection that part position of self-destruction syringe is carried out automatic on-line and detects, and replaces manual detection, and the user can carry out the adjusting of accuracy of detection automatically.Have the record, classification, statistics, storage, the query function that product are detected certified products, this two series products of waste product.And in image, point out the unacceptable product situation by friendly man-machine interface, and give sound, light alarm, greatly reduce workman's detection labour intensity.
Manual detection speed is generally 0.5/s, and the Vision Builder for Automated Inspection detection speed can reach 3 ~ 4/s, and the product detection speed of Vision Builder for Automated Inspection is artificial 6 ~ 8 times, has greatly improved production efficiency.
Manual detection can't uninterruptedly be carried out product quality in 24 hours and detect owing to environment and physiological reason, adopted Vision Builder for Automated Inspection to detect and then made it become possibility.The production time of equipment can prolong to greatest extent, has improved the utilization factor of equipment.
The artificial detection because poor, the vision fatiguability that ventilates is difficult to the Continuous Tracking product quality.Quantize to detect by artificial being difficult to and guarantee that improper defect rate generally about 8 ~ 10%, has caused the significant wastage of the resources of production and production cost; The detection dimensional accuracy of Vision Builder for Automated Inspection is high, thereby greatly improves product percent of pass and detect quality.
Description of drawings
Fig. 1 is the self-disposable type inspirator push-rod image of barbed sheet metal correct position.
Fig. 2 is the self-disposable type inspirator push-rod image of barbed sheet metal malposition.
Fig. 3 is process sequence diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 1, Fig. 2 take from the self-disposable type inspirator push-rod side and real image after treatment.
In Fig. 1, Fig. 2, the transparent space of blank parts after to be the self-disposable type inspirator push-rod image through denoising software process all around, shown in lines be contour images after self-disposable type inspirator push-rod is processed.
Embodiment 1, to the detection of specification product:
Self-disposable type inspirator push-rod image as shown in Figure 1, its middle part is equipped with barbed sheet metal.
Basler ACA640-100GM type industrial camera is fixed on the side of self-destruction syringe, camera is about 20mm apart from the distance of self-destruction syringe side, uses to execute and bears 50 times of amplification zoom zoom camera lenses, and focal length transfers to 16mm, aperture is transferred to maximal value, and the time shutter is adjusted to 0.41ms.Accuracy of detection is set to 0.5mm, the barbed sheet metal of setting certified products apart from the normalized distance of self-disposable type inspirator push-rod lower end from being 11.5um.Adopt special-purpose White LED bowl light source, shine (positive light) from the same side of camera, and block the impact that the metal framework shields extraneous veiling glare with semiclosed, in order to obtain visual pattern more stablely, embody the obvious characteristic of self-destruction syringe otch.The LED bowl light source of this project uses the machine vision special light source (also can use the LED bowl light source of other companies) of CCS company, in order to can photograph clearly image more stablely, and is shown in the screen of computing machine.Adopt the frock bar anchor clamps (faller gill) on the production line to carry out the self-disposable type inspirator push-rod conveying with belt transmission system, guarantee that self-disposable type inspirator push-rod by certain direction and speed, stably enters pick-up unit.
Computing machine is according to the different control system of institute of different production firm production equipment, obtain the synchronous triggering of camera and production process and control signal, start described industrial camera and take the image of the self-disposable type inspirator push-rod of on-line operation, and with the self-disposable type inspirator push-rod image that obtains, be stored in the computing machine.
Computing machine carries out image to captured image by edge extracting, smoothing denoising, binary conversion treatment, Fourier Tranform scheduling algorithm to be processed, and makes image more clear, more meets the truth of self-disposable type inspirator push-rod.The algorithm that adopts in the above-mentioned image processing process is conventional algorithm of the prior art.
Computing machine calculates the installation site of described barbed sheet metal in self-disposable type inspirator push-rod; Calculate this barbed sheet metal apart from the distance (Fig. 1 middle distance h) of self-disposable type inspirator push-rod lower end, this distance value namely is the installation site of described barbed sheet metal.
Such as detected h=11.5mm, equate that with the acceptance value of setting then this product is certified products.Computing machine records, classifies, adds up warehouse-in to such certified products.
Embodiment 2, to the detection of specification product:
Self-disposable type inspirator push-rod image as shown in Figure 2, its middle part is equipped with barbed sheet metal.
Basler ACA640-100GM type industrial camera is fixed on the side of self-destruction syringe, camera is about 20mm apart from the distance of self-destruction syringe side, uses to execute and bears 50 times of amplification zoom zoom camera lenses, and focal length transfers to 16mm, aperture is transferred to maximal value, and the time shutter is adjusted to 0.41ms.Accuracy of detection is set to 0.5mm, the barbed sheet metal of setting certified products apart from the normalized distance of self-disposable type inspirator push-rod lower end from being 11.5um.Adopt special-purpose White LED bowl light source, shine (positive light) from the same side of camera, and block the impact that the metal framework shields extraneous veiling glare with semiclosed, in order to obtain visual pattern more stablely, embody the obvious characteristic of self-destruction syringe otch.The LED bowl light source of this project uses the machine vision special light source (also can use the LED bowl light source of other companies) of CCS company, in order to can photograph clearly image more stablely, and is shown in the screen of computing machine.Adopt the frock bar anchor clamps (faller gill) on the production line to carry out the self-disposable type inspirator push-rod conveying with belt transmission system, guarantee that self-disposable type inspirator push-rod by certain direction and speed, stably enters pick-up unit.
Computing machine is according to the different control system of institute of different production firm production equipment, obtain the synchronous triggering of camera and production process and control signal, start described industrial camera and take the image of the self-disposable type inspirator push-rod of on-line operation, and with the self-disposable type inspirator push-rod image that obtains, be stored in the computing machine.
Computing machine carries out image to captured image by edge extracting, smoothing denoising, binary conversion treatment, Fourier Tranform scheduling algorithm to be processed, and makes image more clear, more meets the truth of self-disposable type inspirator push-rod.The algorithm that adopts in the above-mentioned image processing process is conventional algorithm of the prior art.
Computing machine calculates the installation site of described barbed sheet metal in self-disposable type inspirator push-rod; Calculate this barbed sheet metal apart from the distance (Fig. 2 middle distance h) of self-disposable type inspirator push-rod lower end, this distance value namely is the installation site of described barbed sheet metal.
Such as detected h=16.5mm, unequal with the acceptance value of setting, then this product is unacceptable product.Computing machine is pointed out the unacceptable product situation by friendly man-machine interface in image, and gives sound, light alarm, and such unacceptable product is recorded, classifies, adds up warehouse-in.
More than the control system (hardware and software) of the image capture device (camera, radiation source, power supply, image pick-up card etc.) that uses among all embodiment and storage device (hard disk, CD, floppy disk etc.), image processing equipment (hardware of image processor and software), image display (hardware and software), warning device and each part mentioned above all adopt prior art to design and produce or directly adopt relevant commercially available prod.
Above-described processing step of the present invention is shown in Fig. 3.
It should be noted that at last above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present invention and design, all should think to be included within protection scope of the present invention.
Claims (2)
1. a Vision Builder for Automated Inspection is characterized in that may further comprise the steps to the automatic testing method of part position of self-destruction syringe:
The self-disposable type inspirator push-rod that (1) barbed sheet metal will be installed is fixed on the frock bar anchor clamps, makes frock bar anchor clamps on-line operation, will take camera and be fixed on frock bar anchor clamps one side of on-line operation; According to the size of self-disposable type inspirator push-rod to be detected and barbed sheet metal towards, select the focal length of camera lens, adjust shooting angle, enlargement factor, shooting distance, aperture size, the time shutter of taking camera, in order to obtain clearly photographic images;
(2) installation site of barbed sheet metal in self-disposable type inspirator push-rod is made as the detection parameter, and accuracy of detection and the setting value of described detection parameter are set according to customer requirements;
(3) computing machine is obtained camera and production process synchronous triggering and control signal, starts the image that described camera is taken the on-line operation self-disposable type inspirator push-rod in real time by external trigger and control signal, and with the image transmitting taken to computing machine for detecting;
(4) computing machine is processed by image algorithm, extracts the image of self-disposable type inspirator push-rod;
(5) computing machine calculates the installation site of described barbed sheet metal in self-disposable type inspirator push-rod; Calculate this barbed sheet metal apart from the distance of self-disposable type inspirator push-rod lower end, this distance value namely is the installation site of described barbed sheet metal;
(6) judge that by the distance value that calculates this product belongs to certified products or waste product, by external trigger and control signal waste product is rejected from the discharging opening of appointment;
In described (6) step, specifically carry out in the steps below the smooth judgement of otch and go-on-go:
(7) judge whether described barbed sheet metal equates with setting value apart from the distance of self-disposable type inspirator push-rod lower end, as equated then to turn to (8) step with setting value, if then turn to (9) to go on foot with setting value is unequal;
(8) sort as certified products;
(9) directly as goods rejection.
According to claim 1 described Vision Builder for Automated Inspection to the automatic testing method of part position of self-destruction syringe, it is characterized in that described (6) step, when detecting product and be waste product, computing machine will carry out picture cues by man-machine interface, and start warning device.
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| CN201828525U (en) * | 2010-10-11 | 2011-05-11 | 庄鸿 | Automatic detection system for disposable syringe needles |
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| CN201828525U (en) * | 2010-10-11 | 2011-05-11 | 庄鸿 | Automatic detection system for disposable syringe needles |
Non-Patent Citations (4)
| Title |
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| 一次性注射器针头反表在线检测系统;周建民等;《微计算机信息》;20091231;第25卷(第7-1期);79-81 * |
| 周建民等.一次性注射器针头反表在线检测系统.《微计算机信息》.2009,第25卷(第7-1期),79-81. |
| 章永华等.高稳定性回缩自毁式安全注射器的研制.《中国医疗器械杂志》.2010,第34卷(第3期),204-208. |
| 高稳定性回缩自毁式安全注射器的研制;章永华等;《中国医疗器械杂志》;20101231;第34卷(第3期);204-208 * |
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